//2009/07/26 16:16:56
#include <iostream>
#include <string>
#include <vector>
#include <algorithm>

using namespace std;

class CCipher
{
public:
    string decode(string cipherText, int shift)
    {
		string plain;
		plain.clear();
		for(int i=0; i<cipherText.size(); i++)
		{
			plain += (cipherText[i] - 'A' + 26 - 2) % 26 + 'A';
		}
		return plain;
    }
};
